Trolley-head.



- s. aounazms TBOLLEY HEAD.

(Application filed Apr. 10, 1900.)

l PatentedHSept. ll I900;

(No Model.)

Inventor UNITE- STATES PATENT OFFICE.

STANISLAS BOURGEOIS, OF MANCHESTER, NEW HAMPSHIRE.

rnott v atae.

forming part of Letters Patent No. 657,637, dated September 11, 1900.

Application filed April 10-, 1900.

To all whom it may concern:

Be it known that I, STANISLAS BOURGEOIS,

a citizen of Great Britain, residing at Maninvention, such aswill'enableothers skilled in the art to which it appertains to make anduse the same.

This invention relates especially to the trolley-head or yoke in whichis mounted the trolley-wheel at the outer end of a trolleypole, theobject being, first, to so improve the construction of a'trolleyheadthat the trolley-wheel shall be rendered less liable to leave thetrolley wire or conductor while a car passes around a curve, and,second, to provide more durable and improved means forthe free lateralmovement of the trolleywheel within the yoke of the trolley-head.

As the common length of a trolley-pole is such that the free end of saidpole extends more or less beyond the rear end of an ordinary car thetrolley-wheel is of necessity at an angle with the trolley-wire when thecar passes around acurve or upon a turn-out, and the tendency at suchtime is greatly in favor of the wheeljumping the wire; but if thetrolley-wheel could adjust itself somewhat to the required angle undersuch circumstances much annoyance and trouble would thus be avoided anda saving of time and power effected.

To this end myinvention consists in so improving the construction of atrolley-head that the trolley-wheel mounted therein may adjust itself tothe angle of a trolley-wire with which it may be in contact, even thoughsaid wire may be at an angle with said trolleypole, as will be fully setforth in the following specification and claims and clearlyillustratedin the drawings accompanying and forming a part of the same, of which-Figure 1 is a broken elevation showing a portion of a trolley-pole towhich is attached my improved laterally adjustable trolleyhead, carryinga trolley-wheel. Fig. 2 is a sectional elevation of my improvedtrolleyhead. Fig. 3 is a broken plan View of the parts shown in Fig. 1.

Serial No. 12,306. (No model.)

Similar reference-letters denote corresponding parts in all the views.

A'is a trolley-pole, into which, as at a, is inserted ,the stem b of thetrolley-head B.

A is an eye to which the usual stay-cord may be attached.

O is the yoke, having a tongue 0 adapted to enter a recess 1), formedfor the purpose in the trolley-head B, as shown in Fig. 2,

wherein said tongue is shown to be secured within the recess in the headby a bolt D, to which is threaded a nut (Z, a split pin d being passedthrough the bolt, if desired, to prevent the accidental displacement ofsaid nut. The yoke is perforated, as at c, to receive a stud E, on whichis mounted the trolley-wheel F, and on each side of said trolleywheelupon the stud E is mounted a collar G and a helical spring H. The innersurfaces of the yoke O are recessed, as at 0 for the reception of oneend of either spring H, the springs operating expansively against thecollars Gr for holding the trolley-wheel normally in a central positionwithin the yoke; but at the same time said trolley-wheel is permittedany required lateral play within the yoke, the collars preventing thesprings from coming directly in contact with and wearing into the sidesof the trolley-wheel, as frequently occurs when the common form ofspringis used. Projections c are formed, one on each outer side of theyoke O, and these are recessed at c for the reception of either end ofthe side springs I, said springs being secured at their opposite ends byrivets or screws i to the sides of the trolley-head B, as shown in Figs.1 and 3, the object of said springs I being to maintain the yokenormally in alinement with the trolley head and pole and to insure thereturn of said yoke to its normal position after it has been swung toeither side to accommodate the trolleywheel to a wire which may be at anangle with one under which the other end of the pole maybe disposed. Thelateral movement of said yoke may be limited by the form of theseat ofthe recess 19 of the trolley-head B, with which the end of the tonguecmay come in contact, as shownin Fig. 3.. J represents split pins bywhich the stud E may be retained in its perforations in the yoke.

If the trolley-head should be in alinement with the pole,- as isordinarily the case, and the yoke carrying the trolley-wheel he pivotally attached to the said head, the trolley would have as strong atendency to jump the trolley-wire as if the yoke and head were notpivotally connected, and thus defeat the real purpose of my invention onaccount of said yoke and trolley-wheel assuming a vertical angle withthe trolley-wire when running on a portion of wire at an angle with thepole; but by joining the trolley-head to the pole at such an angle as tocause the former to rest substantially on a horizontal plane when thepole is in its normal position, which can be easily accomplished byforming the stud b at an angle with the trolley-head B, as shown in thedrawings, the pivotal connection of the yoke O with the head B may be asnearly as possible horizontal, and hence the wheel F is,

maintained in a vertical position While hearing against the trolley-wireand following the.

varying angles in the same, thus avoiding any liability to jump off,which it would otherwise be likely to do.

Having described my improvements, what I claim is- 1. An electrictrolley-pole provided with a trolley-head disposed at an angle with saidpole and substantially upon a horizontal plane, an oscillatory yokepivotally attached to said head, and a trolley-wheel mounted in saidyoke.

-2. An electric trolley-pole provided with a trolley head disposed at anangle with said pole and substantially upon a horizontal plane, alaterally-oscillating yoke pivoted to said head, a trolley-wheel mountedin said yoke, and means for limiting the oscillating movement of saidyoke.

3. In an electric trolley-pole, a trolley-head disposed at an angle withsaid pole and substantially upon a horizontal plane and provided with alaterally-oscillating yoke, a trolley-wheel mounted in the yoke, andmeans comprising springs attached to said trolleyhead and adapted tobear against opposite sides of said yoke whereby the latter is heldnormally in alinement with said trolley-pole. 4:. A trolley-headdisposed at an angle with said pole and substantially upon a horizontalplane and provided with a pivoted yoke, springs for maintaining saidyoke normally in alinement with said head, and means with in the pivotedconnection of said parts for limiting the lateral movement of said head.

5. A trolley-head disposed at an angle with said pole and substantiallyupon a horizontal plane and provided with a pivoted yoke,a trolley-wheelmounted within the yoke, springs for maintaining said yoke normally inaline- 'ment with said head, a collar and helical recess formed in eachside of said yoke adapted to receive the free end of either spring,substantially for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

STANISLAS BOURGEOIS. Witnesses:

J. B. THURSTON, SHERMAN E. BURROUGHS.

